Squared Up doesn’t receive anything involving display names when it comes to properties - which is why on the monitored entity view you see the internal system names from the MP rather than their display names too.
As a workaround, you can just type a display name for each of the objects using an if statement. More info in this post:
The Application classes that SquaredUp uses are all abstract, so can’t even extend with extra string properties. I could make a relationship to another CI class, but then I’d have to show the properties for that relationship.
This makes it pretty hard to define anything custom on a squaredup application as far as I can see.